CN110189509A - A kind of wireless long-distance meter-reading system - Google Patents
A kind of wireless long-distance meter-reading system Download PDFInfo
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- CN110189509A CN110189509A CN201910386260.XA CN201910386260A CN110189509A CN 110189509 A CN110189509 A CN 110189509A CN 201910386260 A CN201910386260 A CN 201910386260A CN 110189509 A CN110189509 A CN 110189509A
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- communication module
- meter
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of wireless long-distance meter-reading system, including electric energy meter and metering automation main website, meter reading terminal is connected on electric energy meter, the external interface of meter reading terminal is connected with power carrier communication module, LoRa communication module and 4G communication module；It is connected with jointly between power carrier communication module and LoRa communication module for realizing the first conversion module of power carrier signal and LoRa signal mutually converted；It is connected with jointly between LoRa communication module and 4G communication module for realizing the second conversion module of LoRa signal and 4G signal mutually converted.Wireless long-distance meter-reading system provided by the invention, can be realized the signal covering of no signal or pickup electrode weak-strong test metering automation terminal, long transmission distance, from wiring, and not controlled by voltage；In addition, the present invention can also effectively solve bottleneck problem existing for current data acquisition for electric energy.Due to using LoRa communication mode, adopt compared with the existing technology, the present invention is even better in reliability and information security.
Description
Technical field
The present invention relates to Wireless Meter Reading Technology field more particularly to a kind of wireless long-distance meter-reading systems.
Background technique
Power line carrier, PLC, refers to through existing power circuit, by information in a manner of digital signal or analog signal into
A kind of communication mode of row transmission, due to can use existing power circuit, it is possible to save a large amount of manpower and material resources；Lora
The characteristics of technology is a kind of Radio Transmission Technology of long range low-power consumption, has long distance transmission, adapts to complex environment.
In the prior art, remote meter reading mainly includes following four meter reading method: a. remote meter reading terminal by 485 lines with
Electric energy meter, which is connected, acquires data, then directly by sending data on wireless public network；B. remote meter reading terminal is logical by power carrier
The mode of letter is connected with electric energy meter, acquires data, then directly by sending data on wireless public network；C. remote meter reading terminal passes through
Power carrier communication mode is communicated with distal end power carrier communication module, then will be sent in data to wireless public network；D. how a long-range
Meter reading terminal is by lora communication and lora repeater communication, then will be sent in data to wireless public network.
The shortcomings that above-mentioned remote monitoring modules, is: this ring in electric room to two kinds of meter reading schemes of a, b, in underground garage
In border, there are wireless public network signal is weak, the problem of signal is intermittent or even no signal, seriously affects metering main website and remote
The communication of journey meter copying device；To c kind meter reading scheme, then there is the distal end power carrier communication module and remote meter reading for being located at ground
The problem of device is not same telegram in reply road, power circuit is too long, or even passes through air switch and transformer, so that communication quality,
Speed is low, is the problem of can not communicating；To d kind meter reading scheme, since structure is complicated in underground garage, some electric rooms are even
It is present in the two-layer garage of underground, so that the transmission range of lora signal increases.Due to lora communication mode as distance increases
It will lead to transmission speed decline, lora arrangement of repeaters more the problem of causing transmission speed to decline there is also delay, in addition, adopting
With the mode of lora communication mode acquisition multilist data there is also target information value height, information leakage endangers big problem, deposits
In certain Information Security Risk.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of wireless long-distance meter-reading system, solves prior art medium-long range
The problem of meter reading jitter, communication quality are low and transmission speed declines.
To achieve the above object, the present invention provides technical solution below:
A kind of wireless long-distance meter-reading system, including electric energy meter and metering automation main website, further includes:
Meter reading terminal is bi-directionally connected with electric energy meter；The external interface of the meter reading terminal is connected with wireless communication modulus of conversion
Block, the wireless communication conversion module are used to the communication mode of meter reading terminal being converted to communication；
The wireless communication conversion module includes:
Power carrier communication module is bi-directionally connected with the meter reading terminal, for receiving the downlink letter from meter reading terminal
Number, it is also used to send uplink signal to meter reading terminal；
LoRa communication module is bi-directionally connected with the power carrier communication module, comes from power line carrier, PLC for receiving
The downlink signal of module is also used to send uplink signal to power carrier communication module；
4G communication module is bi-directionally connected, for receiving the downlink from LoRa communication module with the LoRa communication module
Signal is also used to send uplink signal to LoRa communication module；The 4G communication module and the metering automation main website are two-way
Connection；
Wherein, it is connected with the first modulus of conversion jointly between the power carrier communication module and the LoRa communication module
Block, first conversion module for realizing power carrier signal and LoRa signal mutual conversion；
It is connected with the second conversion module between the LoRa communication module and the 4G communication module jointly, described second turn
Block is changed the mold for realizing the mutual conversion of LoRa signal and 4G signal.
Optionally, first conversion module and second conversion module all have the encryption function of nonsystematic code Hamming code
Energy.
Optionally, the encryption digit of the nonsystematic code Hamming code of first conversion module and second conversion module
It is 8-12.
Optionally, the communication mode between the 4G communication module and the metering automation main website is 4G communication mode.
Optionally, the meter reading terminal is equipped with clock module, and the clock module is for when presetting meter reading period distances
It is long.
Optionally, the meter reading terminal is bi-directionally connected by 485 lines and electric energy meter foundation.
Compared with prior art, the invention has the following advantages:
The present invention provides a kind of wireless long-distance meter-reading system, it can be realized no signal or the metering of pickup electrode weak-strong test be automatic
The signal covering for changing terminal, relative to existing method, have it is legal according to rule, long transmission distance, from wiring, not by voltage class
The advantages of limitation；In addition, the present invention can also effectively solve bottleneck problem existing for current data acquisition for electric energy, it is adapted to match
The weak stoichiometric point application of all signals of net system.
Also, LoRa communication mode has the effect of that reliable communications, node are few and information security degree is high, since the present invention adopts
It with LoRa communication mode, therefore adopts relative to existing every technology, the present invention more wins one in reliability and information security
It raises.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of wireless long-distance meter-reading system provided by the invention.
In above-mentioned figure: 10, metering automation main website；11, electric energy meter；21, power carrier communication module；22, LoRa is communicated
Module；23,4G communication module；31, the first conversion module；32, the second conversion module.
Specific embodiment
To enable the purpose of the present invention, feature, advantage more obvious and understandable, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that reality disclosed below
Applying example is only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
The present invention intends to provide a kind of wireless long-distance meter-reading system, overcome in the prior art that radio meter register mode signal is not
Stablize, the defects of communication quality is poor, transmission speed is low and there are signal disclosure risks.
Referring to FIG. 1, wireless long-distance meter-reading system provided by the invention includes electric energy meter 11 and metering automation main website 10,
The metering automation main website 10 is used to that data to be carried out count etc. with O&M application, and carries out load and summarize, light calculating, line loss
The service applications such as analysis.
Wherein, the port of electric energy meter 11 has been bi-directionally connected meter reading terminal by 485 lines, and the meter reading terminal is for acquiring primary
11 data of electric energy meter, and send it to the statistical disposition that metering automation main website 10 carries out data.
In the present embodiment, the external interface of meter reading terminal is connected with wireless communication conversion module, the wireless communication conversion
Module is used to the communication mode of meter reading terminal being converted to communication, to overcome the space of wired meter reading to limit and cost
The defects of high.
Specifically, which includes power carrier communication module 21, LoRa communication module 22 and 4G
Communication module 23.
Power carrier communication module 21 is bi-directionally connected with the meter reading terminal, for receiving the downlink from meter reading terminal
Signal is also used to send uplink signal to meter reading terminal；LoRa communication module 22, it is two-way with the power carrier communication module 21
Connection is also used to send to power carrier communication module 21 for receiving the downlink signal from power carrier communication module 21
Uplink signal.
In order to keep the communication between power carrier communication module 21 and LoRa communication module 22 unblocked, the electric power is carried
The first conversion module 31 is connected between wave communication module 21 and the LoRa communication module 22 jointly, first conversion module 31
For realizing the mutual conversion of power carrier signal and LoRa signal.First conversion module 31 has nonsystematic code Hamming code
Encryption function.
After power carrier communication module 21, which receives downlink, transmits the carrier signal come up, which is given
First conversion module 31；First conversion module 31 parses transmission information, is converted to band for information coding is transmitted according to Hamming code
The LoRa signal of encryption is transferred to LoRa communication module 22.Conversely, when LoRa communication module 22 receives what uplink was sent
When LoRa signal, which is transferred to the first conversion module 31；First conversion module 31 is first according to Hamming code decoding table
It parses transmission information, then by its code conversion is carrier signal transmission to power carrier communication module 21.
4G communication module 23 is bi-directionally connected with the LoRa communication module 22, comes from LoRa communication module 22 for receiving
Downlink signal, be also used to LoRa communication module 22 send uplink signal；The 4G communication module 23 and the metering are automatic
Change main website 10 to be bi-directionally connected, for sending the data of downlink to metering automation main website 10, for the system of metering automation main website 10
Meter processing data, are also used for receiving the upstream data from metering automation.4G communication module 23 and the metering automation master
The communication mode stood between 10 is 4G communication mode.
Likewise, communicating unblocked between LoRa communication module 22 and 4G communication module 23 to realize, LoRa is logical
It is connected with the second conversion module 32 jointly between letter module 22 and the 4G communication module 23, second conversion module 32 is used for
Realize the mutual conversion of LoRa signal and 4G signal.Second conversion module 32 has the encryption function of nonsystematic code Hamming code.
After LoRa communication module 22 receives the LoRa signal that downlink transmission comes up, which is transferred to second turn
Block 32 is changed the mold, the second conversion module 32 parses transmission information according to Hamming code decoding table, and transmission information re-encoding is converted to
4G signal is transferred to 4G communication module 23.Conversely, when 4G communication module 23 receives the 4G signal that uplink is sent, by the 4G
Signal is transferred to the second conversion module 32, and the second conversion module 32 first parses transmission information, encoded further according to Hamming code
It is converted to the LoRa signal with encryption and is transferred to LoRa communication module 22.
Specifically, the encryption digit of the nonsystematic code Hamming code of the first conversion module 31 and second conversion module 32
It is 8-12.In above-mentioned conversion, the Hamming code 8-12 of the first conversion module 31 and the second conversion module 32 use nonsystematic code
Bit encryption function can prevent transmission information to be stolen modification, have technology maturation, cipher round results good and communicate success rate height
The advantages of.
It is understood that systematic code refers to information bit and check bit (the namely redundant digit of channel coding generation) point
It opens and the information bit of nonsystematic code then intersects with check bit, an advantage of systematic code is exactly directly must after decoding
Information bit has been arrived, and has also needed to find out corresponding information sequence according to code word after nonsystematic code decoding；It is non-from encryption angle analysis
Systematic code is safer than systematic code.The present embodiment uses the cipher mode of nonsystematic code, can obtain higher data safety
Property.
In the present embodiment, meter reading terminal is equipped with clock module, and the clock module is for presetting meter reading period distances
Duration.By the clock module, enable 11 data of meter reading terminal timing extraction electric energy meter, to ensure the timeliness of data acquisition
And reliability.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of wireless long-distance meter-reading system, including electric energy meter and metering automation main website, which is characterized in that further include:
Meter reading terminal is bi-directionally connected with electric energy meter；The external interface of the meter reading terminal is connected with wireless communication conversion module, institute
Wireless communication conversion module is stated to be used to the communication mode of meter reading terminal being converted to communication；
The wireless communication conversion module includes:
Power carrier communication module is bi-directionally connected with the meter reading terminal, for receiving the downlink signal from meter reading terminal, also
For sending uplink signal to meter reading terminal；
LoRa communication module is bi-directionally connected with the power carrier communication module, comes from power carrier communication module for receiving
Downlink signal, be also used to power carrier communication module send uplink signal；
4G communication module is bi-directionally connected with the LoRa communication module, for receiving the downlink signal from LoRa communication module,
It is also used to send uplink signal to LoRa communication module；The 4G communication module is bi-directionally connected with the metering automation main website；
Wherein, the first conversion module, institute are connected between the power carrier communication module and the LoRa communication module jointly
The first conversion module is stated for realizing the mutual conversion of power carrier signal and LoRa signal；
The second conversion module, second modulus of conversion are connected between the LoRa communication module and the 4G communication module jointly
Block for realizing LoRa signal and 4G signal mutual conversion.
2. wireless long-distance meter-reading system according to claim 1, which is characterized in that first conversion module and described
Two conversion modules all have the encryption function of nonsystematic code Hamming code.
3. wireless long-distance meter-reading system according to claim 2, which is characterized in that first conversion module and described
The encryption digit of the nonsystematic code Hamming code of two conversion modules is 8-12.
4. wireless long-distance meter-reading system according to claim 1, which is characterized in that the 4G communication module and the metering
Automating the communication mode between main website is 4G communication mode.
5. wireless long-distance meter-reading system according to claim 1, which is characterized in that the meter reading terminal is equipped with clock mould
Block, the clock module is for presetting meter reading period distances duration.
6. wireless long-distance meter-reading system according to claim 1, which is characterized in that the meter reading terminal by 485 lines with
Electric energy meter foundation is bi-directionally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910386260.XA CN110189509A (en) | 2019-05-09 | 2019-05-09 | A kind of wireless long-distance meter-reading system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910386260.XA CN110189509A (en) | 2019-05-09 | 2019-05-09 | A kind of wireless long-distance meter-reading system |
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| Publication Number | Publication Date |
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| CN110189509A true CN110189509A (en) | 2019-08-30 |
Family
ID=67714366
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| CN201910386260.XA Pending CN110189509A (en) | 2019-05-09 | 2019-05-09 | A kind of wireless long-distance meter-reading system |
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Cited By (2)
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| CN111583614A (en) * | 2020-04-30 | 2020-08-25 | 广东电网有限责任公司 | LoRa and carrier wave dual-mode built-in communication module suitable for electric energy meter |
| CN116896398A (en) * | 2023-09-11 | 2023-10-17 | 北京煜邦电力技术股份有限公司 | Power terminal data acquisition device based on carrier communication |
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Application publication date: 20190830 |